Automatic pistol



Nov. Z5 1924- W. MANN AUTOMATIC PIsToL Filed nec. 2o. 1922 Patented Nov. 25, l924.

if T E S erica.

AUTOMATIC PISTOL.

Application led December 20, 1922. Serial No. 608,047.

To all whom t may concern.'

Be it known that I, IVILLY MANN, a citizen of the German Republic, residing at Nenndorf, near Suhl, Germany, have invented certain new and useful Improve ments in Automatic Pistols, of which the following is a specification.

This invention relates to an automatic pistol of the kind comprising three main parts, viz, the barrel, the butt and the sliding breech-block carrier, and in which the barrel, rigidly connected with the butt by means of a threaded engagement, is enclosed in the sliding breech-block carrier.

The object of my invention is to provide an automatic pistol of the above kind, in which the breech-block carrier is adapted to be taken off after the barrel has been unscrewed from the butt, whereby the dismounting and remounting of the parts are greatly facilitated. For dismounting the pistol it will be necessary only to push the breech-block carrier a little back from its normal position, to unscrew the barrel and to take off in upward direction the returned breech-block carrier.

Further objects and advantages of the invention will be set forth in the detailed description which now follows:

In the accompanying drawing Figure 1 is a longitudinal median section of the pistol with the trigger-mechanism and all the other parts that have nothing to do with the invention, omitted; Figure 2 is a cross-sectional view thereof and Figure 3 illustrates the breech-block carrier seen from below.

In the embodiment of the invention shown in the drawing the butt a is provided with an upwardly projecting lug b having a hole with female thread for the reception of the threaded inner end of the barrel c. Then fully screwed in, the threaded barrel end will project from the lug Z) rearwardly to Aform the cartridge-chamber and the abutment 7for the breech-block in the foremostposition of the latter. The length of the projecting screw-threaded end of the barrel is determined.` by' the length of the threaded portion of the barrel and to this end the thread thereon terminates abruptly at e, as clearly shown in Figure l.

The breech-block carrier l is, in a known manner, provided with longitudinal ribs g to slide in corresponding grooves in the rear guiding lug f, and further adapted to slide and be guided on the lug Z) of the butt. The

ribs g of the breech-block carrier are recessed at It, Figure 3, in the rear of the lug and the recess thus obtained in the two ribs is, as regards its length, at least equal to the longitudinal dimension of the lug ZJ, so that in case of dismounting the carrier, the lug Z) finds a free passa-ge.

In case of dismounting the pistol the breech-block carrier is to be retracted against the action of the usual spring shown in Figure l, so that the muzzle-end of the barrel can be gripped and the barrel unscrewed from the butt. Suitable means may be provided for fixing the breecheblock carrier in its retracted position. After the barrel has been removed from the butt, the

breech-block carrier is released and moved.

forwards, until or so that the recesses L of the guiding ribs g coincide with the lug b, whereupon the breech-block carrier is in a position to allow of being readily lifted off from the butt.

F or the purpose of preventing the barrel i from unscrewing accidentally due to the shock on firing or from any other reasons, the rear end thereof is provided with a projecting member such as a pin z' adapted to engage in a recess of the breech-block carrier d. Said pin v1 is located on the top of the inner barrel end in front of the magazine, so that cartridges protruding from the magazine are prevented from being arrested by the upper edge of the inner barrel end, or cartridge chamber, but are properly diverted and guided in coming from thev magazine, to enter the said chamber. Thus accidental disturbances and interruptions in the functions of the pistol are eiiciently avoided.

From the foregoing description it will be seen that simple and eiiicient means are herein provided for accomplishing the objects of the invention, but while the elements shown and described are well adapted to serve the purposes for which they are intended, it is to be understoodthat the drawing illustrates only one embodiment of the invention by way of example and that the invention is not limited to the precise construction set forth, but includes within its purview such changes as may be made within the spirit and scope of the appended claims.

What I claim is 1. In an automatic pistol, the combination of a butt provided with a threaded hole, a removable barrel having its rear ond threaded into said hole, and a sliding breech encasing the barrel and Yformed with internal longitudinal guide ribs for engagement in recesses in the butt to lock the breech and butt together, said ribs having portions thereof cut away to permit their disengagement trom said recesses and the removal of said breech; substantially as described.

2. In an automatic pistol, the combination of a butt provided with an upstanding lug having a threaded hole formed horizontally therethrough, a removable barrel having its rear end threaded into said hole, and a sliding breech encasing said barrel and lug and 'formed with internal longitudinal guide ribs tor normal engagement in recesses in the side walls of the lug to lock the breech to the butt, but releasable from such engagement to permit the removal of the breech; substantially as described.

{Jr-In an automatic pistol, the combination ot a butt provided. with an upstanding lng having a threaded hole formed hori- Zontally therethrough, a removable barrel having its rear end threaded into said hole, and sliding breech encasing said barrel and lug and normally engaged with the latter to lock the breech to the butt, but releasable trom such engagement to permit the removal ot the breech: substantially as described.

el. In an Vautomatic pistol, the combination ot abutt provided with an upstanding lug having a threaded hole. formed horizontally therethrough, a removable barrel having its rear end threaded into said hole, and a sliding breech encasing said barrel rand lug and formed with internal. longitudinalv guide ribs normally engaged in recesses in the side walls ot the lug to lock the breech to the butt, said ribs having portions thereof cut away to permit their disengagement 'from said recesses and the removal ot said breech; substantially as described.

5. An automatic pistol., according to claim 4;, in which the cut-away portions of the ribs are located opposite each other and have a width slightly greater than that of the lug, so as to permitthe breech to be lifted directly ott the butt when said cutaway portions and lug are in alinement; substantially as described.

6. In an automatic pistol, the combination of a butt provided with a threaded hole, a vremovable barrel having its rear end threaded into said hole, and a sliding breech encasing said barrel and removably engaged with the butt; said barrel and breech having an interlock to prevent rotation ot the former; substantially as described.

7. In an automatic pistol, the combination ot a butt provided with a threaded hole, a removable barrel having its rear end threaded into said hole, and a sliding breech encasing said barrel and removably engaged with the butt; said barrel and breech having an interlock embodying a pin on one part and a recess in the other part to prevent rotation of the barrel; substantially as described.

8. In an automatic pistol, the combination oi a butt having an upstanding lug which is formed with a threaded hole, a barrel having its rear end removably threaded into and through said hole and projecting beyond said lug, a sliding breech encasing` said barrel and engaged with the butt, and an interlock between the projecting end ot the barrel and the adjacent portion ot' the breech to prevent rotation of the barrel; substantially as described.

9. In an automatic pistol, the combination ot a butt having an upstanding lug which is formed with a threaded hole, a barrel having` its rear end removably threaded into and through said hole and projecting beyond said lug, a sliding breech encasing said barrel and engaged with the butt, and an interlock between the project ing end ot the barrel and the adjacent portion ot' the breech embodying a pin on one ot said parts and a pin-receiving recess in the other part to prevent rotation of the barrel; substantially as described.

l0. An automatic pistol, according to claim 7, in which the pin member ot the interlock is located at the top of the barrel end and in front ot the magazine, to guide the cartridges coming from the magazine into the cartridge chamber of the barrel and to prevent them from being arrested by the upper edge of said chamber; substantially as described.

1l. In an automatic pistol, the combination of a butt having an upstanding lug, a barrel connected to the butt, and asliding breech encasing the barrel and lug and having internal, longitudinal guide ribs which. are normally engaged in recesses in the side walls of the lug to lock the breech to the butt, the central portions of said ribs being cut away to permit their release from said lug and the removal ot the breech; substantially as described.

In testimony whereof I atix my signature.

WILLY MANN. 

